Congratulations to Stuart! He correctly identified the above games as the only contests since 1916 to feature a home run hit by a switch-hitting pitcher off of another switch-hitting pitcher who also homered in his career. Thanks to Baseball-Reference.com for the home runs logs.

As the most prolific active power-hitting pitcher, Carlos Zambrano (assuming he finds a suitor for 2013) presumably stands the best chance to join this group. These are the active switch-hitting pitchers who played in 2012.

Hatcher has also put just one ball into play in his career, yet debuted as a pinch-hitter, striking out for Emilio Bonifacio. Hey Chris, just havin’ some fun. We love you. Really. Just know you’re gonna knock one out the next time you’re up (probably off the Z-man).

They all appear to have been hit off of a HOFer or All-Star, except for Faber’s ’29 HR, hit off of Emil Yde, who obviously is no HOFer and played his entire career before All Star games, although his rookie season certainly would be an All-Star year today!

JA, there is a switch pitching pitcher in Yankees AAA. He was rule 5 eligible for 2012 but was not drafted. He is also not on the yankees 40 man roster despite pitching 2.77 ERA (though only got in 13 IP) in Scranton 2012. Still, his career minor league ERA is 2.30. He had a torn labrum injury that cut short a promising AAA stint but he should be back and pitching soon. The Yankees have some bullpen depth but it does seem possible he will see MLB time in 2013 or if healthy a real spring training shot at making some club in 2014.

This is not the answer, just a delicious observation: In the 1962 game, Jerry Walker hit Pedro Ramos with a pitch in the top of the 7th, then hit a home run off Ramos leading off the bottom of the 7th.

Quite the outing by Ramos: 2 HR and 5 singles in 1+ IP, and he gets to come back to pitch another inning! Gene Garber had a very similar outing in this game, except the game wasn’t out of reach when he was sent back out for another inning.

He made his debut as a pitcher, pitching a perfect inning against the Chicago Cubs at Wrigley Field in a 13-3 win, less than a year after making his major league debut as a position player. The last player to make a similar quick transition from the backstop to the mound was Art Doll, with the 1936 Boston Bees

In 1941, Bill Harman made his debut as a position player catching for the Phils against the Reds, in the first game of a double-header. He then pitched in the 2nd game. Harman continued to alternate between pitcher, catcher and pinch-hitter the rest of that season, the only one of his career. Final totals: 5 games catching, 5 pitching, and 4 pinch-hitting.

Mike Ryba (1935-46) was a pitcher who, very occasionally, also caught. Final totals: 240 games pitched and 10 caught.

Fred Mitchell was a pitcher who was occasionally used at other positions (but not catching). He played 5 seasons (1901-05), then pitched 3 more years in the minors before (apparently) switching to catching in the minors in 1909, thereby earning a MLB return in 1910 as a catcher, splitting time with Jeff Sweeney on the New York Highlanders. Mitchell is better remembered for managing the 1918 Cubs to the NL pennant.

Jimmie Foxx surely took the longest to transition from catcher to pitcher. Aside from one perfect inning in a blowout loss in 1939, Foxx first pitched for the 1945 Phils in 9 games (incl. two starts), 20 years after debuting as a 17 year-old catcher on the 1925 Athletics. Foxx earned the W (his only decision) in his first start, holding the Reds to 2 runs on 4 hits over 7 innings.

The Cardinals Art Hoelskoetter (1905-08) is probably the most versatile player in major league history. In a career of just 299 games, he played at least 15 games at pitcher, catcher and every infield position (the only player to do that), and had another 20 games in the outfield (1 in left, 7 in center, 13 in right).

Speaking of position players who first pitched late in their MLB careers: there’s Granny Hammer.

Well into his career for the Phillies as a four-time All Star/six-time MVP vote-getter as a SS and second baseman, he developed a pretty good knuckleball and pitched three games in 1956, twelve years after his MLB debut, and finishing a game in 1957. In 1961/1962 he was a player/manager at single-A in the KC Athletics system, mostly relieving in ’61, but mostly starting in 1962.

He pitched well enough in 1962 (10-4/2.03 ERA in 146 IP) to be brought up in late July and relieve in three A’s games. There’s some sort of back-story, where I think that the A’s offered to make him a full-time pitcher on the MLB roster, but he decided to go being just a manager -maybe someone else with more knowledge can fill this in.

Doug: Is there a quick way to track down switch-hitting pitcher HR against switch-hitting pitchers? I know one way to do it but it would take quite a while. There have been 321 switch-hitting pitchers and 54 of them have homered. You then would check those 54 HR logs individually and look for matching pitchers.

I just copied the HR logs into Excel and searched the list of switch-hitting pitchers who had homered. Don’t know how else to do it.

Now that I think of it, I’ll have to amend the answer to the search. Those 4 games are the only times a switch-hitting pitcher homered off of another switch-hitting pitcher who had also homered in his career.

Speaking of Oliver, he was a decent hitter over his career. Someone correct me if I’m wrong but usually natural left handed pitchers stick to hitting left handed because the throwing arm is protected. Not to mention you pick up the natural advantage of the Coriolis force from the left side of the plate.